Self-seating piston for macaroni-presses.



I 1?. MARTOGOIO. SELF SEATINGPISTON FOR MAGARONI PRESSES. A PILIOA'ISION FILED 3111.31, 1910. Q

988,007. Patented Mar.28,1911. F

W? TF1 T 9 w 9,2 v2 Ill 2 .H LL

J I? fig-4 FRANK A. MAETOGCIQ, 032* MINNEAPOIJIS, tittmmteo iia.

SELFQSEATI'NG 3S1 TON mm T0 at! who'll; it may concern: I

Be it known tha'tL- FRAIUi A. hitAR'tOCCIO, a. e1t1zeh otthe Umted States, resuhng at State of Minnesota, have inveutec t certain 11m mutt useful Improvementsin @etflSeattug Pistons for Maceronili'eeses; and I do hen, j deohu'e theftelttmving to he rt :tutl, that, and exact description of the invention, eh' ih he wiltenfihle others skitted in the art to \vhioh it appevtuijnsto I'flfihf: mitt use the oohit hit invention. has for its especial. object to ItIU'tJTOVG the C(JtlStifltCtiOll e't macet-ontpresses uutt unutog'oue ihuehiue mitt (hreeteit to the improvement of the (30I]$t1t1(?t't( 'fi of. the piston'heatl of the press,whereby it perfectly tight joint. is himintuineit hetween-the cytinder tin-it. thepiston.

To the above ends, the invehtton consists of thenovetdeviees amt miu'xbimitions of deieatueteinhfter desex'ihleflmd defined. in

the chums i t 5; es of the t pe ohuve identitieth the i thep 'e' is plovirtethutjts tower d u a oertoxfiett head or the plate, mugh wh" Ithe (tough to term the 311mm [ti-on; or wughttti tot-cud ui'icter very great will? by the CtUYt'thVflittitKI'HPVQIHQIUL of the "pi ton 'which wot'hs within the e ytin (ten, ilk-(5031150 of the very hi e'h 1)" true to \s'hteh tho hfmgh is subjected, it has: hitherto been 't' ittCH1t:y ttilirOSfittfle to pyevent the t opeiruted hetweejuthe pietou and the tinth r nutter the downwu ct movement of:

utti eaiiisee th tumuiuaia to he nu Giat. that con &0 :T-tthur met; rectum-go of" the amt eteuuuu'g the that:

tttttlititijtt p an extr t ysum- I tiiht' ettie'iht n u "omitting-hi1. [tor the (toh'mvzu'dor operative DIOYQXH the P'iHton, will he uutdnmtieutty against 11mm which proportionate to the pie s n'e to which the dough is subjected by the piston. N i In'the u'ceompzmyingr drawings which "tthlHt"21tt3.th(j iIlYQIltiQlh like. etnu'uetei-s initi- CtttiGItiI- IQ parts throughout the seve 'ni vim-yrs. '-o Tie erri-ngtUthe drawings; Figure l is a view in vertical section, some parts being pecifieetiou of Lette is "Patent.

httinneupoflis", in the county otltltennep'm amt 'hjrwer emit portion ot the piston y consitterabte amount; of the i the walls oi? the cylinder u'iu'hsir u h'roken away and some parts in full, show in the lower portionotnmemttmi press having my invention applied to the piston thereof; Fig. 2 is a bottom plan viefi oi the piston removed from the oyhuder; 3 is a side elevation, showing; :1 portion of the expnusihte pechingtrtng of the piston; and Fig. at is 1 fragmentary View in vezrticat see: tion showing a slightly modified. totm ot the piston ottuhlueut,

Of the parts of the ptexe, the moment 1 indicates the cylinder, to the'toweti end; of

which at pertoi'a ted (tie plate 2 is rigidly hut meuroni press and, so to): my invention i: ermeel nech may take various forms. The phtou 5, winch-Works within the cylinder, is )v'tggictty siet'urett tothe tower emf t of :1 heavy stem 6, the upper end of which, in it stzuuh ot-(t litz'lt'ffll'fmt prees, connected to gears v Malia itZQtt-M application filed January at, mm. mm m. tsttome,

The ehevenoted which hupart vertical i'ecipt-oeat IDOVQYtlGHt'H i thereto unit to the piston; permit the piston to he no the eytii'u tut and RWI'H'WI to permit the i'eu ttteu Ht into the eyttmiw: In the ennui:

on 1, ft'ittlt]QYHIOYH, cit entirety out of to one tithe thereof t Hutuetion of (tough on shown in Fig. itthe ht '7' to forth a s eet 't'i on expuhsihteq 11mg; L. This pack It. The prosset piu te 1'1 is loosely heitt in i 105 working! position l'jlfftilittlh by it screw 12 applied to the center there i p at thlmlgh u ceutratt mumtied ttee 'ieir p tute 18 and provided with t tut t 13 is RBCIEIOtt. to t pis-to IS gn'eterebtyihy the out 113; fits loosely u -lthm serews .15 and u euvtty 1t} ten The construct i in the 1 t loosely suit ait The keeper plate L t ion :it'tuetz'ated in Hie. a is substantially the same as thatshown in Fig. 1, but it is probably better adapted'for application to old pistons or to the pistons of the presses already in use. In this modi fied construction, instead of turning down the end of the piston to form the hub portion 7 a supplemental hub portion 17 is rigidly but detachably secured to the piston '5 by screws 18 and is provided with a recess 19, in which the nut 14 is seated, the screw 12 being passed through a perforation in the dough to escape, the greater will 'he the pressure of the packing against the cylinder, and, hence, the impossibility of any escape of the dough. In fact, in practice, it

has been found that, under the downward movement of the piston, there will be very little, if any, escape of the dough at the joint between the cylinder and the piston, and any slight film of dough which may escape will, under the upward movement of the piston and the cylinder, be scraped into the peripheral cavity 10 of the ring 8, so that it may be very quickly and easily removed when the piston is moved out of the upper end of the cylinderfor the purpose of permitting the insertion of another charge of dough into the cylinder. It is important to note that the packing ring 8 fits with considerableplay around the hub portion 7 and that the bolt passage in the plate 13 is considerably larger than the bolt 12, so that said packing ring, the presser plate 11 and the 'bolt 12, when properly set, can accurately center themselves in respect to the cylinder without requiring the piston -5 to be accurately centered or accurately moved in re- }spect to the cylinder. It is further important to note that there is a clearness between the nut 14 and the retaining plate 13 suiii-- cient to permit the clamping plate to drop down slightly and thus relieve the packing ring from an extreme outward pressure un- :dr the upward movement of the piston.

This feature is important because the piston, while it makes a very slow downward movemerit, makesa relatively very rapid upward movement.

Actual and continued of the improved macaroni press has shown a very large saving of dough and a very great saving in time. In fact, the waste of dough has been I practically eliminated and the working capacity of the press has been very greatly increased.

It will be noted that the lower interior surfaces of the packing ring 8 is made conical and is brought to a sharp cylinder scraping edge so that all the dough which tends to adhere to the cylinder will, by this scraping, be turned or rolled inward against the press plate 11.

What 1 claim is:

a piston working therein, of an expansible pack ng ring-and cooperating pressure plate applied to sa d piston, the said pressure 1. The combination with a cylinder and plate having a cam action 011 said packing ring, serving to press same into engagement with said cylinder, and the said packing ring having a beveled surface projecting both laterally and radially beyond the working face of said pressure plate, and terininating in a scraping edge engageable with said cylinder, substantially as described.

2. The combination with a cylinder and a piston working therein, of an expansible packing ring and cooperating pressure plate applied to said piston, the said pressure plate having a cam action on the said packing ring, serving to press the same into engagenent withsaid cylinder, and the said packing ring and pressure plate being mounted with freedom for common movements in a plane transversely intersecting the axes of said piston, to thereby automatically center themselves in respect to said cylinder irrespective of whether or not the said piston s accurately centered in respect to said cylinder.

3. The combination with a cylinder and a piston working therein, of an expansible packing ring and cooperating pressure plate applied to said piston, the said ring: and plate having cooperatingfconical surfaces, the conical surface of said pressure plate .terminating in a sharp edge at the working face thereof, which edge is seated against the conical surface of said ring, substan- .tially as described.

4. The combination with a cylinder and a piston working loosely therein, of an expansiblc packing ring and cooperating pressure plate applied to the working side of said piston, the said pressure plate having a cam action on said ring serving to force the same into engagement with said cylinder, and the said ring having a projecting edge that SCI HPBS against the cylinder under operative movement of said piston, and having a circumferential clearance groove ad- '4 jacent to said piston to receive material scraped from said cylinder under the return movement of said piston, substantially as described.

a 5. The combination with a press cylinder and a piston working therein, of an an 988,067 v. r B

and holding the said nut'interlocked to said piston and engageable with said'. cylinder, piston, the said packing ring, pressure plate, said ring and pressure plate having coopscrew and nut being mounted for centering 15 crating conical surfaces, the conical surface l movements in a plane transversely interpansible spring packing ring seated in said 5 of'sai ring terminating in a sharp cylinder secting the axis of said cylinder. scraping edge projecting both radially and In testimony whereof I affix 'my signature laterally beyond the conical surfaceof said in presence of two witnesses. v pressure. plate, a screw applied centrally to said plate and movable therewith. and ex- 10 tending into a recess in. said piston, a nut applied to the inner end of saidscrew, and a member detachably secured to said piston" FRANK A. MARTOGCIO.

Witnesses:

H. D. KILGORE,

F. D. MERCHANT. 

